Generate a visual to preview it here
02 / Thumbnail studio
Don't guess the winner.
Compare three different visual hypotheses, then let YouTube's native experiment decide what your audience actually watches.
Your thumbnail will appear here
One dominant subject, clean hierarchy, and immediate topic recognition.
16:9 · YouTube ready
Exact headline type is composited in your browser.
Download the variants and upload them to YouTube's native A/B test.
Download the variants and upload them to YouTube's native A/B test.
Headline
deterministic overlayPosition
Refine this visual
Keep the brief, add one visual instruction, and regenerate only the selected direction.
Reality check
How it looks on YouTube
Generation Recipe
The point of the product
One brief.
Three hypotheses.
ThumbLab keeps image ideation flexible and typography exact. It never pretends to know your CTR; it gives YouTube three meaningfully different options to test.
Describe the real video
A focused brief gives the visual model enough context to stay truthful.
Compare the directions
Clarity, curiosity, and emotion create distinct packaging hypotheses.
Run the real experiment
Export the exact PNGs and let YouTube's native A/B test choose.